Duplex envelope



March 18, 1930. w- H, RlFE Y 1,751,216

DUPLEX ENvELoPE Fild sept. 13, 192e .www l mfg Patented l Mar. .'18,1930 WILLIAM HQ RIFE, F CHICAGO, ILLINOIS DUPLEX ENVELOPE Applicationled September 18, 1928. Serial No. 805,670.

This invention relates to an improved du'- plex envelope of a typedesigned to provide separate inner compartments within the body of anenvelope, each compartment being adapted to receive mail matter of aclassification different from that received by the other compartment.

Another object of my invention is to provide an envelope of a typeparticularly adapted to effect an economy of time, labor and material bya simplified construction.

Additional objects and advantages of the method and construction willappear more fully inthe hereinafter specification, when taken inconnection with the accompanying drawings, in which:

F ig. 1 isk an inside plan view of lo`pe before sealing;

Fig. 2 isa fragmentary front view of the construction shown inFig. 1;

Fig. 3 is an elevation of the reverse side of the envelope; l

Fig. 4 -is a transverse section taken on line 4 4 of Fig. 3;

Fig. 5 is a longitudinal section taken on line 5 5 of Fig. 3.;

Fig. 6 is a fragmentary longitudinal seotion takenon line -6-6of Fig. 3,the flaps shown in the right hand side of 3 being my envetucked withintheir respective compartments; l

Fig. 7`is a fragmentary plan View of a modified form of the constructionshown in Fig. 1, whereby inspection of the flap of the smaller.container may be made when the -larger iap is sealed thereover; and

Fig. 8 is a fragmentary view of the construction shown in Fig. 7, whenfolded to inclose and forward mail matter.

In the drawings, 11 is the body portion of a duplex envelope embodyingmy invention, having top and bottom iiaps 12 and 13 respectively, apermanent closure Hap 14 and a sealing ap 15. Gummed or otherwisesuitably secured to the top flap 12 of the body portion of the envelopeis a sheet of paper stock 16 having a flap 17, with a gummed bodyportion 18, the sheet `16 in this manner providing a small compartment19 which 5 may be used as an enclosure for rst dass sure for saidenvelope when affixed to the mail matter, if desired, when the ap 17 issealed. v

In the construction shown in Figs. 7 and 8, 15' designates a cut-awayportion on the Hap 15. When the gummed portion 22 is folded over, theflap 15 may be sealed thereby over the smaller iap 17 in a manner todisclose the postage stamp on the latter, and whether or not the smallerfiap is sealed for first class mail matter or merely tucked in the smallcompartment 19.

It will be observed that b the construction shown I am enabled to e ecta substantial saving of paper, since the flap 12 serves as the back wallof the small com artment 19 and also as one of the closure aps for theback of the larger envelope. I have found it desirable at times in themanufacture of the construction shown, tolirst -cut the paper stock intothe shape displayed ir Fig. 1 and then to apply the gum to the borders,to be followed by the gumming on of the sheet 16, these steps beingexpeditiously accomplished by machine process.

It is to be understood that slight variations and changes may be made inthe construction shown without departing from the spirit or sacrificingany of the advantages of the invention described and illustrated; hencethe inventon is not tobe confined to the details literall as set forth,as I desire to avail myself o such variations and embodiments as fairlylie within the scope of the appended claims.

What I claim as new and desire to secure lby Letters Patent is:

1.` A duplex envelope comprising a.v body portion having top, bottom andside flaps, one of said side flaps providing a permanent clofolded andglued top and bottom flaps, said top flap having a single sheet of paperglued to its inner side to provide a small receptacle between said papersheet and said top flap, .said small receptacle being within the largecompartment provided by the body portion and the co-acting top, bottomand side flaps,

,and an individual sealing llap for said small receptacle and said largecompartment.

A duplex envelope comprising a body portion having top, bottom and sideaps adapted to fold over and provide a compartment for receiving mailmatter, a single sheet of paper glued to the inner surface of said topap to form a small compartment, said single sheet of paper also having asealing flap projecting out of said compartment and adapted optionallyto be tucked within said small compartmentand to be glued on the outsideportion of 'said outer flap to rovide a vseal for first class mailmatter, an al'lap on said body portion adapted to be option, I allytucked into the larger compartment or to be sealed over on the outsideportions of said top and bottom flaps whereby both the large and smallercompartments may be sealed against inspection if desired.

3. A duplex envelope formed of a sheet of paper cut to providetop,bottom and side flaps when folded, a second sheet of aper gummed to theinner surface of one o said flaps to form a small compartment, said`first mentioned sheet of paper providing a large compartment when thetop,bottom and side flaps are folded and gummed, a flap on said secondsheet of paper serving as a seal for said small compartment, anadditional fiap on the irst mentioned sheet of paper for closing both ofsaid compartments, said additional flap having a cut. away portionwhereby when the additional ap is sealed over the flap on the saidsecond sheet of paper, a space on said last mentioned flap will bedisclosed to indicate the postage thereon and its position on theinsideor outside of said small compartment.

4. A duplex envelope formed of a blank cut to provide top, 'bottom andside flaps, one of y said flaps having a comparatively thin sheet ofpaper aiiixedV to the inner side thereof to form an inner compartment,said inner coml partment beine contained in the larger compartmentprovided by the folding of said top,

Ibottom and side fla s of said blank, one of said side iiaps havlng acut away portion providing a means for disclosing a flap on the saidsheet of paper when folded thereover.

5. A duplex envelope formed of a sheet of paper cut to provide top,bottom and side iaps when folded, a second sheet of thinner paper alixedto the inner 'surface of one of said flaps to form a small innercompartl ment within the larger compartment provided by the folding ofsaid top, bottom and side flaps, one of said side flaps having a outaway portion providing a means of determining whether or not the smallcompartment has been sealed and whether postage has been provided on thesmall sealing Hap for said small compartment.

name to this specilication.

' WILLIAM RIFE,

In vtestimony whereof I have signed my f

